A self-cleaning system for a vision protective lens comprises a chassis configured to be worn on a user's head, the chassis having a main body portion defining a field of view. At least one lens is coupled in angularly displaceable manner to the chassis and disposed to extend at least partially across the field of view. At least one wiper blade unit is supported on the chassis to extend across an outer surface of the lens about the field of view. The wiper blade unit includes a blade portion engaging the outer surface of the lens. A drive portion is coupled to selectively drive angular displacement of the lens. The lens is angularly displaced in selectively driven manner relative to the wiper blade unit； and, the lens is at least partially wiped by the blade portion to be cleared prior to advancement angularly into the field of view.
